Overview of Maintenance

有必要对仪器进行定期检查，以确保其安全使用。Agilent 服务代表可以在合同的基础上进行这些定期检查。有关维护检查合同的信息，请联系您的 Agilent 代表。

The following pages describe maintenance (simple repairs) of the pump that can be carried out without opening the main cover.

表: Simple repair procedures
Procedure	Typical Frequency	Notes
Checking and Replacing the Solvent Filter	If solvent filter is blocked	Gradient performance problems, intermittent pressure fluctuations
更换被动入口阀	If internally leaking	Pressure ripple unstable, run Leak Rate Test for verification
Exchange the Active Inlet Valve (AIV) or its Cartridge	If internally leaking	Pressure ripple unstable, run Leak Rate Test for verification
更换出口阀	If internally leaking	Pressure ripple unstable, run Leak Rate Test for verification
更换冲洗阀滤芯或冲洗阀	If internally leaking	Solvent dripping out of waste outlet when valve closed
更换冲洗阀滤芯或冲洗阀	If the frit shows indication of contamination or blockage	A pressure drop of > 10 bar across the frit (at a water flow of 5 mL/min with open purge valve) indicates blockage
不带密封垫冲洗选项的泵头的维护	If pump performance indicates seal wear	Leaks at lower pump head side, unstable retention times, pressure ripple unstable - run Leak Rate Test for verification
Exchange pistons, see 不带密封垫冲洗选项的泵头的维护	If scratched	Seal life time shorter than usual - check pistons while changing the seals

21-6月-2025